"""
Case Type   : 分区表锁降级
Case Name   : alter add分区,同时不相邻分区insert数据
Create At   : 2021/10/12
Owner       : z00562814
Description :
    1、创建范围分区表;
    2、session1中新增分区;
    3、session2中同时在不相邻分区中insert数据;
    4、查看分区数据;
    5、清理环境;
Expect      :
    1、创建范围分区表成功;
    2、session1中新增分区成功;
    3、session2中同时在不相邻分区中插入成功，未阻塞;
    4、查看分区数据成功;
    5、清理环境成功;
History     :
    因机器性能问题用例执行时间不一致会偶现失败，
    优化用例，减少分区数据，控制用例执行时长，不影响功能验证
"""

import unittest
import time
from testcase.utils.ComThread import ComThread
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.CommonSQL import CommonSQL
from testcase.utils.Logger import Logger


class LockLevel(unittest.TestCase):

    def setUp(self):
        self.log = Logger()
        self.log.info('--Opengauss_Function_Lower_Lock_Level_Case0037开始执行--')
        self.constant = Constant()
        self.comsh = CommonSH('PrimaryDbUser')
        self.comSQL = CommonSQL('PrimaryDbUser')
        self.table_name = 't_locklevel_0037'
        self.i_function_name = 'f_insert_locklevel_0037'

    def test_lock_level(self):
        self.log.info('------创建插入数据函数------')
        func_var = 'pvar'
        func_sql1 = f'''insert into {self.table_name} values({func_var},1);'''
        insert_func = self.comSQL.create_func(self.i_function_name,
                                              execute_sql=func_sql1,
                                              var=func_var,
                                              start=20000,
                                              end=80000,
                                              step=20000)
        self.log.info(insert_func)
        self.assertTrue(self.i_function_name in insert_func)

        text = '------step1:创建范围分区表; expect:成功------'
        self.log.info(text)
        create_cmd = f'''drop table if exists {self.table_name};
            create table {self.table_name} (id1 int,id2 int) 
            partition by range (id1)
            (partition p00 values less than (20000),
             partition p01 values less than (40000),
             partition p02 values less than (60000));'''
        self.log.info(create_cmd)
        create_msg = self.comSQL.execut_db_sql(create_cmd)
        self.log.info(create_msg)
        self.assertIn(self.constant.CREATE_TABLE_SUCCESS, create_msg,
                      '执行失败:' + text)

        text = '------step2:session1中新增一个分区; expect:成功------'
        self.log.info(text)
        add_cmd = f'''alter table {self.table_name} add partition p03 \
            start(60000) end(maxvalue);
            select relname from pg_partition where parentid = \
            (select oid from pg_class where relname = '{self.table_name}') \
            order by relname;'''
        session_1 = ComThread(self.comsh.execut_db_sql, args=(add_cmd, ''))
        session_1.setDaemon(True)
        session_1.start()
        time.sleep(0.5)

        text = '---step3 & step4:session2中同时在分区2中insert数据; expect:插入数据成功---'
        self.log.info(text)
        select_cmd = f'''select {insert_func}(20100);
            select count(*) from {self.table_name};'''
        session_2 = ComThread(self.comSQL.execut_db_sql, args=(select_cmd,))
        session_2.setDaemon(True)
        session_2.start()

        self.log.info('------session2执行结果------')
        session_2.join(50)
        session_2_res = session_2.get_result()
        self.log.info(session_2_res)
        self.assertTrue(self.i_function_name in session_2_res.splitlines()[0]
                        and '101' in session_2_res.splitlines()[-2],
                        "执行失败:" + text)

        text = '------session1执行结果------'
        self.log.info(text)
        session_1.join(60)
        session_1_res = session_1.get_result()
        self.log.info(session_1_res)
        self.assertTrue(self.constant.ALTER_TABLE_MSG in session_1_res
                        and 'p03' in session_1_res.splitlines()[-3],
                        "执行失败:" + text)

    def tearDown(self):
        text = '------step5:清理环境; expect:成功------'
        self.log.info(text)
        drop_cmd = f'''drop table {self.table_name} cascade;
            drop function {self.i_function_name};'''
        drop_msg = self.comsh.execut_db_sql(drop_cmd)
        self.log.info(drop_msg)
        self.assertTrue(self.constant.DROP_TABLE_SUCCESS in drop_msg and
                        self.constant.DROP_FUNCTION_SUCCESS_MSG in drop_msg)
        text = '------Opengauss_Function_Lower_Lock_Level_Case0037执行完成------'
        self.log.info(text)
